Dead bolt lock operating means



SePf- Z, 1969 sAKuzc 'rc-mu 3,464,242

DEAD BOLT LOCK OPERATING MEANS Filed May 8. 1967 Y Mu AGENT UnitedStates Patent O 3,464,242 DEAD BOLT LOCK OPERATING MEANS Sakuzo Torii,3-16, Yokokawabashi, sumida-ku, Tokyo, Japan Filed May 8, 1967, Ser. No.636,890 Int. Cl. Eb 65/06 U.S. Cl. 70-134 3 Claims ABSTRACT OF THEDISCLOSURE The invention includes a lock housing having a sliding bolttherein projectable through a suitable opening in an edge of thehousing. Rearwardly of the bolt is an extension having a notchengageable by an operating means. The bolt operating means comprises acup-shaped member rotatably mounted within the housing and having aprojecting finger engageable in the notch to slide the bolt forward andback. A cylinder having key operated plug provided with a suitable camfinger is arranged so that the nger engages a notch in the cup-shapedmember to rotate same upon rotation of the key and plug. The bottom ofthe cup-shaped member has a polygonal opening to be engaged by asuitable handle to operate the bolt from t-he inside, if desired. Ateither end of the movement of the bolt, the nger on the cup-shapedmember is spring held in contact `with a sloping surface, rendering thebolt jarproof and substantially jimmy-proof.

This invention relates to a dead bolt lock operating means.

It is an object of this invention to provide a sliding bolt lock havinga rotatable intermediate bolt operator.

A further object of the invention is the provision of means positivelyholding the bolt in either locked or unlocked position.

An additional object of this invention is the provision of a rotatablebolt operating member having a suitable notch or depression thereinengageable by the cam member of a key operated plug in a cylindermember.

These and other objects will become apparent upon consideration of thefollowing specification taken with the accompanying drawings, whichtogether form a comple-te disclosure of this invention.

In the drawings, wherein like characters of reference indicate likeparts throughout the several figures:

FIG. 1 is a fragmentary vertical section through the lock;

FIG. 2 is a section on the line 2 2 of FIG. 1, looking in the directionof the arrows;

FIG. 3 is an inside view of the bolt operator in one position;

FIG. 4 is a rear view of same, and

FIG. 5 is a vertical section of a slightly modied form of bolt operatingmechanism.

Referring to FIGS. l to 4, the numeral indicates a lock housing ofgenerally rectangular shape having a front edge wall 12 and inside andoutside or right and left walls 14, 16. As an element of nish or trim,the edge wall 15 may be covered by a polished plate or the like 18. Theend wall 12 and the plate 18 have registering rectangular openings 20,22 therein, respectively, to accommodate the sliding bolt 24, which inthis instance is rectangular in cross section. The locking portion ofthe bolt is slidably projectible through the openings 20, 22, and innormal locked position projects slightly within the casing 10 to theshoulder 26. Rearwardly of the shoulder 26, an extension of the bolt hasa notch 28 which is provided with upwardly sloping portions 30, 32 for apurpose later to 3,464,242 Patented Sept. 2, 1969 ICC be described.Adjacent the end 34 of the bolt 24, there is mounted a transverse pin 36which rides in slots 38, 40 inthe side plates 14, 16, respectively, toprovide a longitudinally extending bearing for the bolts 24.

The walls 14, 16 are provided respectively with registerthreadedopenings 42, 44, said openings respectively having annular ridges 46, 48therearound. Mounted on the ridges 46, 48 is a cylindrical cup-shapedbolt operating member 50, having a bottom 52 and a cylindrical wall 54.The bottom preferably has an annular depression 56 provitling a ange 58to engage the ridge 46 to support the member 50, the mouth or open endof which encircles th" flange 48.

.Projecting from the cylindrical wall 54 is a bolt operating lug orfinger 60'. In line with the lug 60, without the oprator 50, there is anotch 62 for a purpose later to appear. A cylinder lock means 64 ofknown type, having the usual threaded periphery and the key operatedplug 66, is mounted in the opening 44. The cam `68 is mounted on theinner end of the plug 66 as by screws 70.

A spring 72, engaging at one end in a slot 74 and at the other endpassing in a loop about pins 76, 78, bears against thelug 60 during itsentire movement, and when at rest on inclined portions 30, 32. A screwholds the cylinder 64 in position in the usual manner. When a key isinserted inthe plug `66, the plug is rotated to rotate the cam 68, whichengaging in the groove 62, rotates the operator 50. The lug 60 on theoperator 50 engages in the notch 28 to move the bolt 24 either to lockedor unlocked position. lneither position, the bolt 24 s held againstaccidental movement by the tension of the spring 72. T-he operator hasthe flanges 57, 58, cut away at diametrically opposite points 57 and 58and the flanges 57, 58, position the operator within the housing in amanner such that the lug 60 does not rub against the side plates 14, 16.Stop pins 82, 84 limit the rotation of the operator 50.

A noncircular, preferably rectangular, opening 86 is formed in thebottom of the cup member S0' to accommodate a similarly shaped end of aknob stem or handle 88, if such a device is desired, so that the boltmay be operated from the inside. Also, a key may be used here as well ason the outside.

In FIG. 5, the modification includes end plate 112, ornamental coverplate 118, bolt 124 passing through openings 120, 122 in the plates 112,11-8. The bolt 124 has a pin 136 riding in the slot 138. The operator150 has a lug -Which engages the notch 128 in the bolt 124. The spring172 engages the pins 176, 178 and the slot 174, and presses against thelug 160. The lug 160 rests on the inclined faces 130, 132 of the notch128 at locked and unlocked positions, respectively, and is thus springurged against accidental removal. The operator 150 rotates on flangessimilar to 46 and 48, only one, 148, being shown. The cylinder 164 has akey operated plug 166, with a cam held in place by screws and havingteeth 168, which engage recesses 162 in the operator 150'. A screw holdsthe cylinder 164 in position. Stop pins 182, 184 limit rotation of theoperator. Except for the teeth 168 and the recesses 162, the operatorperforms exactly like the operator of FIGS. l to 4.

Although preferred modifications of this invention have been described,it is to be understood that other forms and modifications may be devisedwithin the skill of the art.

Iclaim:

1. A lock comprising a housing, a bolt slidably mounted in said housingfor reciprocation between a locked and unlocked position, a notch insaid bolt intermediate its ends having oppositely inclined surfaces onthe facing surfaces thereof, a rotatably mounted operator comprising alug having a surface congruent with said inclined surfaces forengagement with said inclined surfaces, stop means for limiting rotationof the operator, spring means urging said lug into engagement with saidtop means at said locked and unlocked position with said lug surfaceopposing either said inclined surface and key operated cam means forreciprocating said bolt.

2. A lock as defined in claim 1 wherein said key operated meanscomprises a cam engaging the operator adjacent the lug.

3. A lock as defined in claim 1 wherein the spring means comprises aleaf spring carried by the boit bridging the notch and in biasingcontact with the lug.

4 References Cited UNITED STATES PATENTS 1,070,178 8/1913 Radford 70-1341,381,395 6/1921 Bock 70-134 X 1,383,128 6/1921 Larsen 70-134 X FOREIGNPATENTS 336,703 5/ 1921 Germany.

2,240 5/ 1882 Great Britain. 506,340 5/1920 France.

MARVIN A. CHAMPION, Primary Examiner EDWARD J. MCCARTHY, AssistantExaminer

